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3491
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3492
Interaction between soil moisture regime and nitrogen level in upland rice [microform].
Published 1977Visual Material -
3493
The economics of irrigation development in Thailand a case study of the Chanasutr irrigation system [microform].
Published 1977Visual Material -
3494
Scholastic aptitude and attitude towards farming of secondary school students [microform].
Published 1977Visual Material -
3495
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3496
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3497
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3498
Anatomy and histochemistry of Tabernaemontana pandacaqui Poir and Symphytum Officianale L. [microform]
Published 1977Visual Material -
3499
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3500
Algal associations in mangrove communities in Puerto Galera, Oriental Mindoro [microform]
Published 1977Visual Material