![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi3UORVyb2X8aFiKbubCnA8gxMcAztnEjD-b1A5FGkfnKLDS1nGa8WLttE8pIpkIFTEe6tJ0o4I_RPJWozc9EW_CcjEewShO0IGl5hADoUztWCOxXkD7ThhyphenhyphenLa9qkret4n_T8lQeaI9V2k/s400/1970+Biological+Rosecraft+cachet.jpg)
The Canadian IBP stamp , issued on February 18, 1970, shows a microscopic view of a leaf.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBi-ex1XPxRqXSbuXOG9Fo8285WQVfxtrcFy4Nnp4g6Y396RqeluTbw6M5Wr_n1Ocqc2GZqmjbs3FeHev6MhTfDMyydp_8i8ZXrefgD8TDBQ5urJWJSwVNJuA0Cz2LPeaEhNTXzhfCvYE/s400/1970+Biology+Proof.jpg)
National Archives of Canada
First Day Covers
Canada Post Office Publicity First Day Cover
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgN3vbU_TKrDgHjT27qdZXUpG7GYNP2AX3MQXIDsyZkaZnZJW1fElKKD_vl2K1BXq7uwIoVqNly0OUS8UlixuZM7KPcItAHNdC4AZOYXg2gIZokY75qvFoGOGWmXxn-hanHDFig32re6LU/s400/1970+Biology+1.jpg)
Schering Corporation
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhqaZHlMPilUOPk7wnI8KRL0jzD2jm73vssEkSHmWrQglxTZ8hPRlAcvgaGS5jV08zo1kL1PMQaNCmfTjsKy0nvbLY-WqF-BIeyL91jf0WIIUK79sSty42WHN1mDRjZyHiKA6NMOmIV6mE/s400/1970+Biology+2.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjpEtUbIi0zhTmm485VYAD-yc0qPhjzm5fGtrM_I6GtmHegy6_0sI_HDhVwVXyvvg0h16zAkXqQCcSXVx1X1hTIsQGD4wn1OF8tRs1g8VtfCCPFPIK2TBVPeSXOUdErXaCS33k9JkNy_5I/s400/1970+Biology+3.jpg)
Canada Envelope Company
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEvpUSQDCnmjXibtfqCdH8CZuvpeW7IIorxZDoaxALQEwfSQ0xBGw71OnYAjBE3NJFSuOt1YoN8Kvy5UFudhatUajo5OP_if5_drxicMiz1ckacMZnRyPBG_-SkOJeoMc8RIWK7XCIMYk/s400/1970+Biology+5.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgNvaQIIWQj5Vtieci4DU2bSB-_QA6YMj1tuOinhcYYX0QYHJoRVu3qeiU_HgFYj9x8sX7V9hre8fN_cs3Qor5kSI3SGCgJ4zP4B-yiPi9WdFDPhPaY83czVX5nwnY8c5wYm0b-BOyXT1o/s400/1970+Biology+4.jpg)
Jackson
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi1cnSky7EbBnY0lKKZvso35PmbXkwFjlqZE8TIJZKy4VJuQ7mBuebRGmLCTMKGO-U3nqTLZVmosGiWfx1hchAWh9Uql4dXAp6f7XWsPOOynDjbkxZLB3rqqQhR2YcBWP6vxxL5jwhoUgs/s400/1970+Biology+7.jpg)
Overseas Mailers
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOGIPV0oZEKOkrxR7AzP3NV8ijYrVKQ9AOdk1CpIW20ZufrXOq4ig5LsZuZlcYxyn5N1411pE3-UWjwSUIGkKKh-U_VGwAAUsz7-RzmxDZERRdxgs-yM46hs6KRGi-IIStxIzUGw0QJ38/s400/1970+Biology+6.jpg)
H & E
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjVIsSkQwGsa6ObAPR_Y0IsPqqv7VcqTOFf_tFvm3mqZHdmE5AIqR6B47U_zqPGPUzxoQgsm56MAlOPhzPLQQ8JFs6Rky4rnY1rHw9A1d0C23WHGPDs_Xdjq2MK2qzhvOSa24q9AsogMIs/s400/1970+Biology+8.jpg)
David Pritchard
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgmAZylxQrvQpLIpNXCqTu-pK_n8FVkqklUbuDgl5iqMHHa3u9T1IoBbYFN54hQ0gf3D4kwa7nVDD0Jby_OlRu0qP9uh6wZAovgxhzt11GNNmgQLo6alSu5HI90CrXQc73pFDhNG_queFs/s400/1970+Biology+9.jpg)
Ayerst Laboratory
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZ6zZJkQS66f4vadCn06kQ16PITzyIAzOaG2-oFRhVd_HAehyJLhHS41L1US6vQmETCXokyf8ixyNygvtSu9gIdAqYKPDxw3FT7cawI0t8CbjHxALER-oq3KmSP23BIzM2kPQeDOWUyOs/s400/1970+Biology+10.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEibodZlB1YGpgGkNMHPnOmQA2Is90nKx10byBM1_y6726mRMQLQduJ_6SfRapRrceOjzc9U3jy1rG-sS3P6YQrnAVil_Zr1p08lXmZVZe7kJm3lM05KMbVrBT2klhYgcuGZpAb1h5CxfOk/s400/1970+Biology+11.jpg)
Rosecraft
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBtaHHc6EKIPjM_A7zolF1bMSHQH_aMxvquc7i-MftnxrFBJ2NNseTVF-dp2ZZ2ILL-XrJkaa9K_pwJJt3kpP-cOFqOPBWIcC_KYt5CgHepg5jHNMNtdR3wCNQix1h2RpjzdxLTc1urh4/s400/1970+Biological+Rosecraft.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg_IpTKeWpd5vxquFEQQAxgyId6FC6u3k18hWrcG4f2YYnxuJWHlxIhCF1NQO9vuXqn3p_CGijcLTDb8dxEPE9I0tCmtVJYooYIBGkFLxpTmv6rHtM8XBNn0drc0etmvAb6DN2x0gGGGkQ/s400/New+Biology.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjFW03mCUi8sJBlsnLlGUmquukWZ3aYlPrecX_kzjscLgBm-hLxuv8n8HAQjdPCXi5SvJWonaBCKdCmoDlEHYhPrnbJV_bigOvO0pm0qCFN_yx_CbjiYpAHIH38aj4jfD70lBFAmaNPgqs3/s400/1970+International+Biological+Programme.jpg)
Usages
Domestic Letter
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgKm6mvTBGYNK-vnsDl_AKRhCVJrsUyRZCsIpkHURBiu_BbFho10YjgsSzfyzs_kB_-yOaamrNxD_q21SN_DqHVlYL8ESVcFG0mIsAHaoPO0QMw1e3GpVXej8B4CV5RQV6bQ_G9v8QwkS4/s400/1970+Biology+12.jpg)
Toronto, March 11, 1970
6 cents domestic letter rate